VS 2008 Reading A Tcp Stream?
Jul 1, 2009
I'm sending an http request through a proxy using tcp, and then using a streamreader to read the netstream...The streamreader is supposed read each line up to </html> , however it doesn't seem to be waiting for the packet/response to be fully received, as it always returns only the first 5-10 lines of HTML.If I add a breakpoint at the line "Using sr", and pause it there for a few seconds and then continue the execution, it will return the full HTML up to the </html> as it should.This is the part of my code which reads the response.
Dim sendbytes As Byte()
sendbytes = System.Text.Encoding.ASCII.GetBytes(ReqHeaders)
netstream = tcp.GetStream()
netstream.Write(sendbytes, 0, sendbytes.Length)
[code].....
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May 26, 2011
Heres the InnerException:{"Unable to read data from the transport connection: A blocking operation was interrupted by a call to WSACancelBlockingCall."}Stack Trace:
" at MyNetworkStream.HandleOrRethrowException(Exception e) at MyNetworkStream.Read(Byte[] buffer, Int32 offset, Int32 count) at MySql.Data.MySqlClient.TimedStream.Read(Byte[] buffer, Int32 offset, Int32 count) at
[code].....
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Mar 29, 2010
I'm trying to read data from some local XML files and process data from them using VB.net.
The format is:
<?xml version='1.0' standalone='yes' ?>
<DataFeed>
[code].....
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Jul 6, 2009
i am using visual studio 2008 using vb.net. I have opened an xml stream and am reading it using xmltextreader. So far so good. I am using the following code to parse the stream and to get an understanding of what it contains and how to use the info.
[Code]...
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Oct 29, 2009
I've got an XMLTextWriter writing to a Stream of a WebRequest. Everything works as it should:
Dim wr As WebRequest = WebRequest.Create("https://wwwcie.ups.com/ups.app/xml/ShipAccept")
With wr[code].....
How can I intercept this XML that's being written as an XMLDocument type? I tried snagging it from the stream but that gave me a 'The stream does not support reading.' exception
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May 25, 2009
I am sending data to server via TCP IP Connection. I am using a continuous loop at the server end - that accepts new clients and while streams can be read, it reads data stream.
The data is sent from the client with 2 leading bytes of data that represent the size of the packet of data sent and type of data.
My question is: how do I retrieve the size of the data packet and then check that this amount of data has been retrieved?
[Code].....
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May 25, 2009
I am sending data to server via TCP IP Connection. I am using a continuous loop at the server end - that accepts new clients and while streams can be read, it reads data stream.
The data is sent from the client with 2 leading bytes of data that represent the size of the packet of data sent and type of data.
My question is: how do I retrieve the size of the data packet and then check that this amount of data has been retrieved?[code]...
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Mar 3, 2009
i need to read a large file stream binary my code is Dim sr As New IO.FileStream(srcFile,
[Code]..
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May 23, 2011
I need to read signed and unsigned 8 bit, 16 bit and 32 bit values from a file stream which may be little-endian or big-endian (it happens to be a tiff file which carries the byte order indicator at the start).I initially started by writing my own functions to read the values and was able to do so for unsigned values. e.g.
Public Function ReadUInt32() As UInt32
Dim b(4) As Byte
input.Read(b, 0, 4)
[code]....
But then I started looking at signed values and my brain broke.As an alternative, I found the IO.BinaryReader which will let me read signed values directly but doesn't seem to have any way to indicate that the data is big-endian or little-endian.Is there a nice way of handling this? Failing that, can someone tell me how to convert multiple bytes into signed values (in both byte orders)?
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May 25, 2012
in an winForm app in VS2010 win 7 compiling to x86, I try to do what Alvas.Audio seems to work. See (c# ex: [URL] for reference.
Dim data() As Byte = wr.ReadData(second * i, second)
The result give me data.length()=0. I do not have any exception, I can read format from it and whatever reader I use I got this problem.EDIT : After some tests, it seems like the uncompressed file I create in the first step (in PCM format, with .wav extension) can not be recognized by the Alvas.audio library for the second step. I must miss something around Audio file markups or something alike.
Here is the code that might be the source (basically this is step 1):
Dim functOut As String = String.Empty
Dim wr As Alvas.Audio.IAudioReader = Nothing
Dim fs As IO.FileStream = Nothing
[code]....
How can I write the resulted stream to be sure I can read it again later?
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May 5, 2011
Im making a desktop player for a online web radio, and for the program I wanna make it show all the stream info. Like the stream name, and such. However I dont know how to do this? I looked everywhere
The server url is setup like this "[URL]" And it has all the stream info and that there. So is there a way I can get the info from there onto like say a label? Live updates btw.
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Nov 22, 2011
I have a problem with the cryptostream, if i write the stream to a memorystream the memory that the stream used is still alocated and i have no way of unalocating it.what am i missingdoing wrong? im using-using on the streams,readers and crypto stuffs so the framework should shut them all down right? i tryed calling .close and .dispose but nothing ,in fact i moved it all over I have provided the sub that im using for the encrytion im in .net 4.5 so there is a lil async stuff but i know thats not the problem coz i moved this code out of my main app(.net 4) for testing to see if i could fix the problem.[code...]
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Jul 5, 2010
I am developing a VB.NET 2008 application, consisting of a main EXE application and several resource DLLs.
I need two functions for the DLL:
1) one function to get a list of all files in the resources of the DLL.
2) one function to return 'by name' a resource file as a System.IO.Stream type.
NOTE: The files will not be "Embedded Resource" (this doubles the size of the DLL), so I think cannot use 'GetManifestResourceStream'.
[Code]...
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Jul 6, 2010
I am developing a VB.NET 2008 application, consisting of a main EXE application and several resource DLLs.I am trouble with two functions for the DLL:
1) one function to get a list of all files in the resources of the DLL.
2) one function to return 'by name' a resource file as a System.IO.Stream type.
NOTE: The files will not be "Embedded Resource" (this doubles the size of the DLL), so I think cannot use 'GetManifestResourceStream'.
I currently use:
Return New System.IO.MemoryStream(My.Resources.MyFileName)
but I want it to be called by name.I am adding the resources using the VS 2008 "Resources" tab, from the My Project screen, I'm not manually editing Resources.resxAs I said before, it works with:
Return New System.IO.MemoryStream(My.Resources.MyFileName)
but I need to get the resources by name, which also works by using
GetMAnifestResourceStream
but this requires to set the resources Build Action to "Embedded Resource", which doubles the size of my DLL file.I currently use "None" as Build Action, but I can use any Build Action that does not increase the file size more than the actual resources size.
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Apr 16, 2011
How can I get html document from a stream?
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Jul 19, 2011
I am trying to make a program that can send voice over LAN. I already have the connection between the computers working, but I can't really seem to find a way to actually record + stream sound.
I've found out that I can use
Private Declare Function mciSendString Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, ByVal uReturnLength As Integer, ByVal hwndCallback As Integer) As Integer
and then
mciSendString("open new Type waveaudio Alias recsound", "", 0, 0)
mciSendString("record recsound", "", 0, 0)
mciSendString("save recsound *PATH*", "", 0, 0)
to save and record sound.
But I haven't really been able to find any documentation on that function, so I haven't been able to find out for myself, how I can send the recorded sound over LAN, instead of saving it on the computer.
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Nov 30, 2009
I have a dataGridView and tied it to a button that saves every time you click it. and every time you click it, I want to write a line to a txtfile that displays how many records were changed and the date that they were changed. Everything works fine but every time a save has been made it over write the previous entry on the text file. Here is some of the code.
If changes > 0 Then
MessageBox.Show(changes & " changed rows were stored in the database.") ' changes shows how many entries were changed
swDate.WriteLine(changes & " record changes on " & entryDate) 'entryDate is formated as date with value of "Now"
Else
[code]....
I am getting the right results in the text file except it over writes previous entry's so there is only one entry saved in the text file at any given time. I want it to keep building the text file so every time something is streamWrited the previous things in the text file stay there and it add to it. Looking at my problem I cant really justify or implement a For Each..Next or a Do While..Loop. My vb knowledge is limited so go easy on me.
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May 10, 2011
I'm trying to write code to download from an FTP site. I got it to work in some cases - mostly text files, but when the reader reads a value greater than 256 it seems to have difficulty. Right now I'm trying with a ZIP file, and the file downloads, but always says, 'File is Corrupted' when I try to open it.
[Code]...
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Apr 4, 2009
I am interested in streaming video from a webcam on one PC to another PC. Could this be done without streaming to a server. Could this be achieved by streaming using P2P?
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Apr 20, 2009
im trying to use a 2 combo boxes each with a list of 7 cities these need to link up with numbers in a stream reader to give a total distance.[code]
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Feb 10, 2009
I need to read strings by stream! Is this possible? I've been searching for quite a while now, without results.So what i have is an application which gets song lyrics. The lyrics come in a string and i need to separate the string into multiple lines. Just to make that clear, lets say that im getting this text and put it into a string:
Bla bla bla..
Na nana na
And in string format = "Bla bla bla... Na nana na" but what i need to do is separate them into its original, line by line.I created an for each loop which looked for upper chars and when found, create a new line. But that didn't work out so well since the lyrics are written in proper english, using the upper "I" everywhere. So i created a new loop which ignored "I":es if they were followed by a space/blank " ". That didn't work either, it skipped some sentences.
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Nov 25, 2010
I have create a Stored procedure which is creates the Streaming Data Base.This SP needs to have the path on which will put the mdf files (and some other things).Until now i was run this procedure after i first create the above mentioned path.Now i want to run the same procedure without interference in the server.So I give the following path in order the procedure to execut it and understand where i want to give the path guide.
\ServerNameSharedFolderNameSQL
The stored procedure takes the path and tries to go to the folder of 'SQL' in order to do her job.But in this point i receive an error which says:CREATE DATABASE failed. Some file names listed could not be created, Check related errors.
-I'm Cheking the way of puting the path and it is absolutelly right, I mean accepted from the server machine and from the client machine as well.
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Jul 19, 2011
I am using StreamWriter and StreamReader in VB.NET 2008 Express to read and write ASCII text files. When I create the file and later read it, there is no problem, because I use System.Text.Encoding.UTF8 on both the write and read sides, so extended text is handled without problem. But sometimes, I have text files come in that are just straight 8 bit ASCII without the Unicode BOM... and they get a lot of junk when I try to read in anything with extended ASCII characters in it. It seems like the 8 bit extended characters are translated into multi-byte codes, and since they are filenames, of course, that doesn't work. Since the filenames just have straight 8 bit ASCII filenames. I have tried all sorts of encodings, and nothing seems to work.
The most common character that causes a problem is an "a" ... it is used in a lot of proper names. The funny thing is that sometimes is seems to workout... is there a way to read these types of text files? Some way to just tell StreamReader not to decode the text, just treat it as straight plain 8 bit ASCII text (with the old IBM PC mapping, I think). The one thing that works is to manually edit the input, replacing the extended characters with their un-accented partner and then renaming the files to match the new spelling. Maybe I should just go to read them as byte input and breaking the lines apart in my code.
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Feb 24, 2010
I need to pass to the BackgroundWorker1_DoWork a stream and 3 textboxes.I can pass the 3 textboxes as an array but the stream complicates it:
BackgroundWorker1.RunWorkerAsync() <== from here?
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Dec 14, 2010
I am sending a POST request to an API server and I have reused code where I have successfully done this before on other servers and for some reason, which I cannot figure out why, it's not working. I get the error:
Cannot close stream until all bytes are written."}
even though I declared the content length correctly and I am not sure what I am missing here...
data = data + "</posts>"
Dim postBytes As [Byte]() = Encoding.UTF8.GetBytes(data)
Thread.Sleep(10000)
[Code].....
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Jul 2, 2011
Everyone seems to have their own TCP dilemma so I figured I'd ask this here and see what the pros have to say. Basically I need to connect to an IP 192.168.5.100, port 8000 and listen for all the data that is being sent out. When I Telnet to 192.168.5.100 8000, it shows as...
[Code]...
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Apr 4, 2010
I'm writing some text to a memory stream and need to modify it once in the memory stream The reason I can't modify prior to adding to the memory stream is that it is from some 3rd party component. Here is an example:ms = New MemoryStreamdoc.Save(ms, SaveFormat.Html)I need to do some modification to the resulting text that ends up in ms. Is there a way to convert the contents of ms into a string, and then back into a memory stream once modified?
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Sep 2, 2009
Im using the SSL stream class to connect to a server and authenticate their self-signed certificate. My authentication code gets an error: "RemoteCertificateChainErrors". When I drill down into the X509ChainStatuses, I only see a status of "UntrustedRoot" and status information of "A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider." This seems acceptable due to the self-signed nature of their certificate. I understand that I can ignore this error. However, Id like to do as much as possible to authenticate. I have a certificate from them. Ive been told to add their cert to my root certs somehow. How do I correct my code use this cert in authentication?
[Code]...
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Jan 18, 2011
I have been using the following Stream Reader code for over a year now to pull information from 3 websites w/ no issues. Recently my users are getting massive amounts of "Timeout" errors. I have opened a ticket w/ the IT department but they have not found any issues (we are experiencing off/on issues w/ our web traffic speeds in our department). Per the code I have the timeout set to 20 seconds but the Timeout error occurs in only a few seconds from the System.Net.WebException.
Imports System.Text.RegularExpressions
Imports System.Net
Imports System.IO
[code]....
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Feb 3, 2009
When I use Dotfuscator Enhanced Community Edition to dotfuscate one of my programs, it breaks the part of my program that takes an ebmbedded GZIP file and decompresses it to a normal stream which is then written to a file. Here is the code that dies:
VB
Dim Stream As New GZipStream(Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(MyNameSpace & "." & EmbeddedResource), CompressionMode.Decompress)
I did some investigating by putting in messagebox outputs of the variables and it seems the reason it dies is because MyNameSpace is a blank string. This global variable is defined early on in the program as such:
VB
Public MyNameSpace As String = System.Reflection.Assembly.GetEntryAssembly().EntryPoint.DeclaringType.Namespace()
So what I need is either another way of accessing the root namespace, another way of getting to an ebmbedded resource or a way to make Dotfuscator not destroy that namespace. I did think about using My.Resources.... but the problem with that is that I can't pass the string "EmbeddedResource" to the subroutine - I'd have to do the files all in individual lines I think.Also, a side question: The only enhancement I can ever find with the Enhanced edition of Dotfuscator is "Deep Visual Studio Integration" but I cannot see any evidence of this. I mean there's a button in the Tools menu to start Dotfuscator but that's not what I'd call "deep integration". I assumed it meant you could tell it to automatically dotfuscate when compiling but I can't find any documentation on how to do this.
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